Title:
FUEL INJECTION CONTROL DEVICE AND FULE INJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/090320
Kind Code:
A1
Abstract:
As a fuel injection control device, an ECU (100) is equipped with an increase control unit (111), a target value setting unit (114), and an estimation unit (115). The increase control unit (111) controls the supply of electricity to a coil (70) so as to begin increasing the coil current when a needle (30) serving as a valve body is in the closed state, and to increase the coil current to a target value. The estimation unit (115) estimates the amount of overshoot when overshoot behavior occurs, wherein a movable core (40) moves as a result of the coil current reaching the target value and the needle (30) continues to move due to inertia even after the movable core makes contact with a stationary core (60). When the amount of overshoot estimated by the estimation unit (115) is equal to or exceeds a prescribed amount, the target value setting unit (114) lowers the target value in subsequent settings so as to be lower than the current setting.
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Inventors:
KATAOKA HAJIME (JP)
GOTOH MORIYASU (JP)
YAMAMOTO SHINSUKE (JP)
GOTOH MORIYASU (JP)
YAMAMOTO SHINSUKE (JP)
Application Number:
PCT/JP2016/079377
Publication Date:
June 01, 2017
Filing Date:
October 04, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02D41/20; F02D41/36; F02M51/00; F02M51/06
Foreign References:
| JP2014163278A | 2014-09-08 | |||
| JP2015124612A | 2015-07-06 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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